摘要
磷酸铁锂(LiFePO_(4),简称LFP)因其良好的安全性、稳定的充放电平台和原料来源广泛等优点,成为当前应用最广泛的正极材料之一。然而,LFP倍率性能较差,且在低温环境下容量大幅衰减,限制了其在动力电池和特殊环境下的应用。本文从多角度分析了LFP存在缺陷的机理,并总结了几种主要的改性技术路径及作用原理。最后,对LFP未来的发展方向提出了相应的展望。
Lithium iron phosphate(LiFePO_(4),LFP for short)is considered to be one of the most promising cathode candidates due to the advantages of good safety,stable charging and discharging platform,and wide source of raw materials.However,LFP has poor rate performance,and its capacity is greatly attenuated in low-temperature environment,which limits its application in power batteries and special environments.In this paper,the mechanism of defects in LFP are analyzed from multiple perspectives,and several main modification technology paths and modification principles are summarized.Finally,this paper puts forward corresponding prospects for the future development direction of LFP.
作者
朱豪飞
王建业
陈柏旭
杨倩鹏
武恒
Zhu Haofei;Wang Jianye;Chen Boxu;Yang Qianpeng;Wu Heng(Qinghai Photovoltaic Industry Innovation Center Co.,Ltd.,State Power Investment Corporation,Xining,810007;Qinghai Huanghe Hydropower Development Co.,Ltd,Xining,810008;School of Energy Power and Mechanical Engineering,North China Electric Power University(Beijing),Beijing,102206;School of Materials Science and Technology,Northwestern Polytechnical University,Xi'an,710072)
出处
《化学通报》
CAS
CSCD
北大核心
2023年第5期535-542,共8页
Chemistry
基金
国家重点研发计划项目(2021YFB2400100,2021YFB2400105)
广东省科技计划项目(2019B090905007)资助。
关键词
锂离子电池
磷酸铁锂
缺陷机理
改性策略
Lithium-ion batteries
Lithium iron phosphate
Mechanism of defect
Modification strategy
